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Finding the Third Proportional to 38,881 and 81,678.75

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Solution

The third proportional to 38,881 and 81,678.75 is: 171,585.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,881 : 81,678.75 = 81,678.75 : x
  2. Step 2: Convert to fraction form
    38,881/81,678.75 = 81,678.75/x
  3. Step 3: Cross multiply
    38,881x = 81,678.75 × 81,678.75
  4. Step 4: Simplify right side
    38,881x = 6,671,418,201.56
  5. Step 5: Solve for x
    x = 6,671,418,201.56/38,881
  6. Step 6: Final answer
    x = 171,585.56

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.